MongoDB রেগুলার এক্সপ্রেশন "জন" এর পরিবর্তে নির্দিষ্ট নাম "জন" সহ রেকর্ড আনতে

একটি নির্দিষ্ট শব্দ অনুসন্ধানের জন্য, regex এর সাথে /searchWord/ ব্যবহার করুন। আসুন নথি-

> db.demo221.insertOne({"Details":{"StudentName":"Chris","StudentAge":21}});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3ee15d03d395bdc213472b")
}
> db.demo221.insertOne({"Details":{"StudentName":"John","StudentAge":20}});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3ee16503d395bdc213472c")
}
> db.demo221.insertOne({"Details":{"StudentName":"Bob","StudentAge":22}});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3ee16b03d395bdc213472d")
}
> db.demo221.insertOne({"Details":{"StudentName":"john","StudentAge":24}});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e3ee17303d395bdc213472e")
}

Find() পদ্ধতি -

> db.demo221.find();

এটি নিম্নলিখিত আউটপুট −

{ "_id" : ObjectId("5e3ee15d03d395bdc213472b"), "Details" : { "StudentName" : "Chris", "StudentAge" : 21 } }
{ "_id" : ObjectId("5e3ee16503d395bdc213472c"), "Details" : { "StudentName" : "John", "StudentAge" : 20 } }
{ "_id" : ObjectId("5e3ee16b03d395bdc213472d"), "Details" : { "StudentName" : "Bob", "StudentAge" : 22 } }
{ "_id" : ObjectId("5e3ee17303d395bdc213472e"), "Details" : { "StudentName" : "john", "StudentAge" : 24 } }

"John" −

> db.demo221.find({"Details.StudentName":/John/});

এটি নিম্নলিখিত আউটপুট −

{ "_id" : ObjectId("5e3ee16503d395bdc213472c"), "Details" : { "StudentName" : "John", "StudentAge" : 20 } }